[Class : 40] Treatment Of Materials; Processing Of Oils, Fuels And Gas; Processing Of Natural Gas ; Refining Services; Oil And Fuel Refining; Refining Of Petrochemicals And Fuel Materials; Heat Treatment Of Pipes And Tubes Made Of Metal; Petroleum Gas Liquefaction Services; Treatment Of Oil Spills; Technical Consulting Related To The Manufacturing Of Oil And Gas Equipment, Control Systems, And Machinery.